Abstract

West Coast estuaries are geologically young and composed of a variety of geomorphological types. These estuaries range from large fjords to shallow lagoons; from large to low freshwater flows. Natural hazards include E1 Niños, strong Pacific storms, and active tectonic activity. West Coast estuaries support a wide range of living resources: five salmon species, harvestable shellfish, waterfowl and marine birds, marine mammals, and a variety of algae and plants. Although populations of many of these living resources have declined (salmonids), others have increased (marine mammals). West Coast estuaries are also centers of commerce and increasingly large shipping traffic. The West Coast human population is rising faster than most other areas of the U.S. and Canada, and is distributed heavily in southern California, the San Francisco Bay area, around Puget Sound, and the Fraser River estuary. While water pollution is a problem in many of the urbanized estuaries, most estuaries do not suffer from poor water quality. Primary estuarine problems include habitat alterations, degradation, and loss; diverted freshwater flows; marine sediment contamination; and exotic species introductions. The growing West Coast economy and population are in part related to the quality of life, which is dependent on the use and enjoyment of abundant coastal natural resources.

Cohen, A. N. and J. T. Carlton. 1995. Nonindigenous Aquatic Species in a United States Estuary: A Case Study of the Biological Invasions of the San Francisco Bay and Delta. U.S. Fish Wildlife Service and Connecticut Sea Grant, National Oceanic and Atmospheric Administration Grant Number NA36RG0467, Washington, D.C.

Harrison, P. J., D. L. Mackas, B. W. Frost, R. W. MacDonald, and E. A. Crecelius. 1994. An assessment of nutrients, plankton, and some pollutants in the water column of Juan de Fuca Strait, Strait of Georgia and Puget Sound, and their transboundary transport, p. 138–174.In R. C. H. Wilson, R. J. Beamish, F. Aitkens, and J. Bell (eds.), Review of the Marine Environment and Biota of Strait of Georgia, Puget Sound, and Juan de Fuca Strait. Proceedings of the British Columbia/Washington Symposium on the Marine Environment. Canadian Technical Report of Fisheries and Aquatic Sciences Number 1948. Victoria, British Columbia.

57.

Henny, C. J., R. A. Grove, andO. R. Hedstrom. 1996. A Field Evaluation of Mink and River Otter on the Lower Columbia River and the Influence of Environmental Contaminants. Final Report to Lower Columbia River Bi-State Water Quality Program, Contract Number ODEQ 143-94. Oregon Department Water Quality, Portland, Oregon.Google Scholar

Kennedy, K. A. 1982. Plant communities and their standing crops on estuaries of the east coast of Vancouver Island. M.S. Thesis, University of British Columbia, Vancouver, British Columbia.Google Scholar

Levy, D. A. andC. D. Levings. 1978. A Description of the Fish Community of the Squamish River Estuary, British Columbia: Relative Abundance, Seasonal Changes, and Feeding Habits of Salmonids. Fisheries and Marine Service. Manuscript Report Number 1475. Canadian Department of Fisheries and Oceans, Vancouver, British Columbia.Google Scholar

Lie, U. andJ. C. Kelly. 1970. Benthic infauna communities off the coast of Washington and in Puget Sound: Identification and distribution of the communities.Journal of the Fisheries Research Board of Canada 27:621–651.Google Scholar

National Marine Fisheries Service. 1997. Investigation of Scientific Information on the Impacts of California Sea Lions and Pacific Harbor Seals on Salmonids and on the Coastal Ecosystems of Washington, Oregon, and California. U.S. Department of Commerce, National Oceanic and Atmospheric Administration, Technical Memorandum NMFS-NWFSC-28. Seattle, Washington.

107.

National Oceanic and Atmospheric Administration. 1990. Estuaries of the United States: Vital Statistics of a National Resource Base. Special National Oceanic and Atmospheric Administration 20th Anniversary Report, Strategic Assessments Branch, National Ocean Service, Rockville, Maryland.Google Scholar

Nichols, F. H. and M. M. Pamatmat. 1988. The ecology of the soft-bottom benthos of San Francisco Bay: A community profile. U.S. Fish and Wildlife Service Biological Report Number 85(7.19), Washington, D.C.

Northcote, T. G., G. L. Ennis, andM. H. Anderson. 1975. Periphytic and Planktonic Algae of the Lower Fraser River in Relation to Water Quality Conditions. Technical Report Number 8, Water Research Center, University of British Columbia, Vancouver, British Columbia.Google Scholar

Sewell, M. 1997. Detection of the impact of predation by migratory shorebirds: An experimental test in the Fraser River estuary, British Columbia (Canada).Marine Ecology Progress Series 144:23–40.CrossRefGoogle Scholar

Weitkamp, L. 1994. A Review of the Effects of Dams on the Columbia River Estuarine Environment, with Special Reference to Salmonids. U.S. Department of Energy, Bonneville Power Administration Contract DE-A179-93BP99021. National Marine Fisheries Service, Northwest Fisheries Science Center, Seattle, Washington.Google Scholar